What is the product of(-1/4)x(-3/7)? write your answer in the simplest fraction form.

The tuition costs, c, for a local community college are modeled by c(h) = 250 + 200h, where h represents the number of credit hours taken. the local state university has tuition costs, s, modeled by the function s(h) = 300 + 180h. how many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

What is 140% of 25? because i need

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1